Effects on the brain by alcohol 52,the power of now eckhart tolle book review uk,quotes on happiness and positive thinking youtube,kingsman the secret service dvd full - Tips For You

Author: admin, 20.12.2015. Category: Positive Affirmations Quotes

Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. To understand how a person feels pleasure and pain we need to understand the way neurotransmitters work. Dopamine (DA) is the neurotransmitter that plays a part in controlling movement, thought processes, emotions, and the pleasure centers of the brain. When meth stimulates these transmitters to excessively release dopamine into many different areas of the brain, the safety mechanism would normally react by reabsorbing and transporting the excess chemicals back into the synaptic vessels, but meth blocks dopamine re-uptake, and a gradual chemical buildup occurs.
Studies have shown that meth overdoses are almost indistinguishable from those behaviors exhibited by a Type I schizophrenic. Norepinephrine (NE) is a neurotransmitter that plays a part in controlling alertness, rest cycles, attention, and memory. Another difference between the dopamine and norepinephrine systems is that meth is not neurotoxic to the norepinephrine system synapses and receptors. The process of epinephrine depletion in a meth user is similar to the process of a car whose acceleration pedal is superglued to the floor. Serotonin System Serotonin (5-HT) is the last of the neurotransmitters that we will be studying. Home » Medical Marijuana » Does Marijuana Cause Brain Damage and Have Any Long Term Effects? In the original studies scientists found that upon post mortem examinations of rhesus monkeys used in the experiments had structural changes in several brain regions. What they don’t tell you is that in order to achieve these results they had to administer extremely high doses of THC to the test subjects. In the most recently published study involving rhesus monkeys they were exposed to face mask inhalation equivalent of four to five joints per day for a year. No post mortem examinations have been done on the brains of heavy marijuana users, but numerous marijuana experiments have been done with people where test subjects have been given marijuana in a laboratory setting, and then compared them to controls on a variety of cognitive tests and brain scans. In an even more recent study around 2003, long term and daily marijuana use does not cause any permanent brain damage as well as long term effects. Besides the “very small” impairment the heavy marijuana users results on thinking tests were similar to those that don’t smoke marijuana. The minimal differences were found in users who smoked daily, or several times a week or month, and had very little long term effects from smoking marijuana. Enter your email address to subscribe to Best Seed Bank and receive notifications of new posts by email. When a person drinks a cup of coffee, ingests a sleeping pill, or does a drug like meth, that person's neurotransmitter levels can be affected. Meth affects these neurotransmitters either by increasing chemical release, or by stopping the metabolism (breakdown) and re-uptake of these neurochemicals. When a person physically works out or accomplishes a difficult task, the brain releases excess dopamine into certain areas of the brain. Type I schizophrenic behavior includes psychotic episodes, delusions, hallucinations, hearing voices, and extreme paranoia. So if you are reading this article, and are having trouble concentrating, it could be because your brain is currently not producing enough norepinephrine. When you encounter an exciting or intense situation, stores of adrenaline are released into the blood stream and a rush instantaneously occurs. As seen with dopamine and norepinephrine, a blocked re-uptake mechanism results in excess chemicals floating in the synaptical gap.
The crash is more noticeable in meth abusers who have used the drug for many days in a row, and their adrenaline stores are thoroughly depleted.
The meth user’s mind and body are working at a high speed, just like the engine of that car would run at high speed.
Serotonin plays an important role in many behaviors including sleep, appetite, memory, sexual behavior, and mood.

This reduction in serotonin levels is a result of meth blocking the synthesis and release of chemical serotonin from the synapse. Many of the myths spread by the government, DARE, and supposedly ‘scientific’ studies done in the 1970s by government sponsored experiments are supposed to prove that marijuana use causes brain damage and has ill long term effects, but the circumstances under which the experiments were performed are either neglected, or not mentioned at all. The rhesus monkeys were exposed to THC and the brain changes primarily involved the hippocampus, which is a vital element to learning and memory. In the studies no significant difference were found, and there is a lot of evidence that being high does not impair retrieval of information that has been learned previously.
The research only found a slight impairment in memory and learning of long term marijuana users.
They took 700 regular marijuana users and compared them with 484 non-users on various aspects of brain function: reaction time, language skills, motor skills, reasoning ability, memory, and their ability to learn new information. Neurotransmitters are essentially the brain’s chemical messengers that work together to perform many different tasks. Meth can also bind to the nerve receptors and confuse the brain by mimicking certain neurotransmitters. The imbalance of dopamine levels causes this schizophrenic-like behavior that wears off within a couple days after use has ended.
Going to get some coffee would help you to raise these levels, allowing concentration to return. This growth does not mean that the brain becomes more efficient at administering norepinephrine chemicals to the different areas of the brain as a result of this cancerous expansion. For example, when you are about to run a race at a track meet, you can feel the nervous energy as the adrenaline is released.
The meth user’s epinephrine system is wasting stores of epinephrine, just like the superglued accelerator is recklessly burning stores of gas. The serotonin system becomes restricted, and the chances of violent behavior and depression increase as the effects of the drug start to wear off.
In other studies that used rodents they also reported similar brain damage, which suggests negative long term effects of marijuana and brain damage. Notice that this is 200 times the psychoactive dose in humans, not 200 times the psychoactive dose in rhesus monkeys or rodents.
The hippocampus was exactly the same as before, and as in normal brains, there were no changes in cell size, cell number, or brain architecture. Though, being high , especially being really high will interfere with marijuana users ability to transfer new information to long term memory, which all stoners already know is well and true. This impairment if properly examined could be proven to be experimental error, report errors, or it could just be a slight impairment according to the researchers it was “very small”. The neurotransmitter systems that we will be focusing on are dopamine, norepinephrine, epinephrine, and serotonin. This chain of events creates a dangerous chemical imbalance within the brain, resulting in necrosis (nerve cell death) and nerve cell structural change.(Wilson,2006) The brain has different safety mechanisms to protect against imbalances of neurochemicals, but meth shuts down these safety mechanisms. This growth could be partially responsible for the short-circuiting of the brain, and directly responsible for the chemical imbalance that is associated with meth usage. A fact that is not readily apparent is that adrenaline also plays a minor role in our brain as a neurotransmitter. This excess of epinephrine surging to different areas of the brain is partially responsible for the increased energy and rush that the meth user feels. Eventually the user depletes his epinephrine supply because he hasn’t rested, just like the car would eventually stop because its tank is empty. A hallucinogen like LSD can bind onto serotonin receptors, mimicking the actual neurotransmitter, resulting in unnatural stimulation in different areas of the brain. The person's need to keep taking meth far outweighs any moral and financial obligation. Rodents and rhesus monkeys are smaller, have less body weight and mass as humans, so an appropriate psychoactive dose for the rodents and rhesus monkeys would probably be at most half of what a human needs.

Though this temporary disabling of storing long term memories is only in effect while the user is high.
These transmitters are all affected by meth and can suffer long-lasting damage even after just one trial with this dangerous drug.
When the drug finally wears off, and the dopamine levels gradually decrease, the meth user plunges to the bottom of this ride losing all the feelings of euphoria and well being.
Noradrenalin is the main chemical used by the body for the synthesis of the hormone adrenaline. Meth users lose their appetite as a direct result of having excess epinephrine chemicals in circulation.
With epinephrine store depletion, the crash is the resulting complication, and the user’s body has to rest until adrenaline stores are replenished. The actual serotonin neurotransmitter is structurally different than the other synaptic messengers of the brain, and meth affects this system in different ways.
The user may commit crimes for drug money, may abandon their family, or may stop paying rent or house payments in order to keep taking meth. These euphoric feelings will not return until the dopamine system is once again stimulated.
This neurotransmitter has been studied in depth by scientists, and plays a key role in many complex brain functions. Epinephrine’s importance as a chemical messenger becomes evident when a drug like meth declares a territorial war in the synaptic gap (the space in between the nerve transmitter and nerve receptor).
The user loses weight as their body feeds off the empty energy of this continual adrenaline rush while they are not even thinking about taking the time to eat. One way meth use affects the serotonin systems is by reducing the levels of chemical serotonin in the brain. An irreversible aspect of meth use is that it does kill certain neurotransmitter synapses, and this is the case with serotonin synapses. From the previous explanation of how meth affects dopamine chemicals at the synapse, one can easily understand the detrimental influence of meth on the norepinephrine system. Meth is a drug that lab rats will take instead of eating food, and they will die of starvation when food is right under their nose. Reinforcement is a psychological term that refers to a stimulus that strengthens or weakens the behavior that produced it.
The abuser's emotions, pains, and pleasures will be permanently and irreversibly altered. As seen with the dopamine system, the drug meth can influence norepinephrine transmitters by blocking the re-uptake mechanism. When a person has a deficiency in brain serotonin levels, they are more likely to exhibit violent behavior, anxiety, depression, impulsiveness, and could have a propensity towards drug and alcohol abuse.
However, the main difference between the dopamine and norepinephrine systems is that meth does not stimulate excess chemical release at the norepinephrine synapses. For the rest of their lives they are going to be lacking the ability to produce adequate amounts of serotonin.
Meth short-circuits dopamine levels, directly influencing reinforcement behaviors, and actually induces drug-seeking behaviors.
Meth short-circuits the user’s brain, is highly addictive, and many of the abuser’s joys in life will slowly vanish as these nerve cells wither and die.

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